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Assessment of a semi‐quantitative electric fishing sampling technique for juvenile Atlantic salmon, Salmo salar L., and trout, Salmo trutta L., in small streams
Author(s) -
STRANGE C. D.,
APRAHAMIAN M. W.,
WINSTONE A. J.
Publication year - 1989
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1989.tb00375.x
Subject(s) - salmo , brown trout , juvenile , biology , fishery , streams , fishing , salmonidae , trout , fish <actinopterygii> , ecology , computer network , computer science
. A semi‐quantitative technique of assessing trout, Salmo trutta L., and juvenile Atlantic salmon, Salmo salar L., stocks in small rivers is described and evaluated against a commonly used quantitative method. The results indicate that for 0+ and >0+ juvenile salmon and trout a log 10 n+1 transformed linear regression accounted for between 68.6% and 90.2% of the total variance in the relationship between the semi‐quantitative and the quantitative result. The use of a categorization system is recommended and the applicability of the technique to an extensive juvenile salmonid monitoring programme is described.